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// Copyright (c) IPython Development Team.
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// Distributed under the terms of the Modified BSD License.
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/**
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*
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*
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* @module codecell
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* @namespace codecell
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* @class CodeCell
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*/
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define([
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'base/js/namespace',
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'jquery',
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'base/js/utils',
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'base/js/keyboard',
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'notebook/js/cell',
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'notebook/js/outputarea',
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'notebook/js/completer',
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'notebook/js/celltoolbar',
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'codemirror/lib/codemirror',
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'codemirror/mode/python/python',
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'notebook/js/codemirror-ipython'
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], function(IPython, $, utils, keyboard, cell, outputarea, completer, celltoolbar, CodeMirror, cmpython, cmip) {
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"use strict";
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var Cell = cell.Cell;
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/* local util for codemirror */
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var posEq = function(a, b) {return a.line == b.line && a.ch == b.ch;};
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/**
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*
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* function to delete until previous non blanking space character
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* or first multiple of 4 tabstop.
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* @private
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*/
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CodeMirror.commands.delSpaceToPrevTabStop = function(cm){
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var from = cm.getCursor(true), to = cm.getCursor(false), sel = !posEq(from, to);
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if (!posEq(from, to)) { cm.replaceRange("", from, to); return; }
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var cur = cm.getCursor(), line = cm.getLine(cur.line);
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var tabsize = cm.getOption('tabSize');
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var chToPrevTabStop = cur.ch-(Math.ceil(cur.ch/tabsize)-1)*tabsize;
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from = {ch:cur.ch-chToPrevTabStop,line:cur.line};
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var select = cm.getRange(from,cur);
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if( select.match(/^\ +$/) !== null){
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cm.replaceRange("",from,cur);
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} else {
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cm.deleteH(-1,"char");
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}
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};
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var keycodes = keyboard.keycodes;
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var CodeCell = function (kernel, options) {
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/**
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* Constructor
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*
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* A Cell conceived to write code.
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*
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* Parameters:
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* kernel: Kernel instance
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* The kernel doesn't have to be set at creation time, in that case
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* it will be null and set_kernel has to be called later.
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* options: dictionary
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* Dictionary of keyword arguments.
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* events: $(Events) instance
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* config: dictionary
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* keyboard_manager: KeyboardManager instance
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* notebook: Notebook instance
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* tooltip: Tooltip instance
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*/
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this.kernel = kernel || null;
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this.notebook = options.notebook;
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this.collapsed = false;
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this.events = options.events;
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this.tooltip = options.tooltip;
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this.config = options.config;
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// create all attributed in constructor function
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// even if null for V8 VM optimisation
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this.input_prompt_number = null;
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this.celltoolbar = null;
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this.output_area = null;
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// Keep a stack of the 'active' output areas (where active means the
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// output area that recieves output). When a user activates an output
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// area, it gets pushed to the stack. Then, when the output area is
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// deactivated, it's popped from the stack. When the stack is empty,
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// the cell's output area is used.
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this.active_output_areas = [];
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var that = this;
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Object.defineProperty(this, 'active_output_area', {
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get: function() {
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if (that.active_output_areas && that.active_output_areas.length > 0) {
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return that.active_output_areas[that.active_output_areas.length-1];
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} else {
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return that.output_area;
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}
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},
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});
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this.last_msg_id = null;
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this.completer = null;
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this.widget_views = [];
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var config = utils.mergeopt(CodeCell, this.config);
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Cell.apply(this,[{
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config: config,
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keyboard_manager: options.keyboard_manager,
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events: this.events}]);
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// Attributes we want to override in this subclass.
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this.cell_type = "code";
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this.element.focusout(
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function() { that.auto_highlight(); }
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);
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};
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CodeCell.options_default = {
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cm_config : {
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extraKeys: {
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"Tab" : "indentMore",
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"Shift-Tab" : "indentLess",
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"Backspace" : "delSpaceToPrevTabStop",
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"Cmd-/" : "toggleComment",
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"Ctrl-/" : "toggleComment"
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},
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mode: 'ipython',
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theme: 'ipython',
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matchBrackets: true
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}
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};
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CodeCell.msg_cells = {};
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CodeCell.prototype = Object.create(Cell.prototype);
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/**
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* @method push_output_area
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*/
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CodeCell.prototype.push_output_area = function (output_area) {
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this.active_output_areas.push(output_area);
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};
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/**
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* @method pop_output_area
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*/
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CodeCell.prototype.pop_output_area = function (output_area) {
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var index = this.active_output_areas.lastIndexOf(output_area);
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if (index > -1) {
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this.active_output_areas.splice(index, 1);
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}
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};
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/**
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* @method auto_highlight
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*/
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CodeCell.prototype.auto_highlight = function () {
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this._auto_highlight(this.config.cell_magic_highlight);
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};
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/** @method create_element */
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CodeCell.prototype.create_element = function () {
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Cell.prototype.create_element.apply(this, arguments);
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var cell = $('<div></div>').addClass('cell code_cell');
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cell.attr('tabindex','2');
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var input = $('<div></div>').addClass('input');
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var prompt = $('<div/>').addClass('prompt input_prompt');
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var inner_cell = $('<div/>').addClass('inner_cell');
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this.celltoolbar = new celltoolbar.CellToolbar({
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cell: this,
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notebook: this.notebook});
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inner_cell.append(this.celltoolbar.element);
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var input_area = $('<div/>').addClass('input_area');
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this.code_mirror = new CodeMirror(input_area.get(0), this.cm_config);
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this.code_mirror.on('keydown', $.proxy(this.handle_keyevent,this))
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$(this.code_mirror.getInputField()).attr("spellcheck", "false");
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inner_cell.append(input_area);
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input.append(prompt).append(inner_cell);
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var widget_area = $('<div/>')
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.addClass('widget-area')
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.hide();
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this.widget_area = widget_area;
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var widget_prompt = $('<div/>')
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.addClass('prompt')
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.appendTo(widget_area);
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var widget_subarea = $('<div/>')
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.addClass('widget-subarea')
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.appendTo(widget_area);
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this.widget_subarea = widget_subarea;
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var that = this;
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var widget_clear_buton = $('<button />')
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.addClass('close')
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.html('×')
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.click(function() {
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widget_area.slideUp('', function(){
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for (var i = 0; i < that.widget_views.length; i++) {
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that.widget_views[i].remove();
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}
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that.widget_views = [];
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widget_subarea.html('');
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});
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})
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.appendTo(widget_prompt);
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var output = $('<div></div>');
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cell.append(input).append(widget_area).append(output);
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this.element = cell;
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this.output_area = new outputarea.OutputArea({
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selector: output,
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prompt_area: true,
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events: this.events,
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keyboard_manager: this.keyboard_manager});
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this.completer = new completer.Completer(this, this.events);
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};
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/**
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* Display a widget view in the cell.
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*/
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CodeCell.prototype.display_widget_view = function(view_promise) {
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// Display a dummy element
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var dummy = $('<div/>');
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this.widget_subarea.append(dummy);
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// Display the view.
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var that = this;
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return view_promise.then(function(view) {
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dummy.replaceWith(view.$el);
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this.widget_views.push(view);
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return view;
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});
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};
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/** @method bind_events */
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CodeCell.prototype.bind_events = function () {
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Cell.prototype.bind_events.apply(this);
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var that = this;
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this.element.focusout(
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function() { that.auto_highlight(); }
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);
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};
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/**
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* This method gets called in CodeMirror's onKeyDown/onKeyPress
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* handlers and is used to provide custom key handling. Its return
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* value is used to determine if CodeMirror should ignore the event:
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* true = ignore, false = don't ignore.
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* @method handle_codemirror_keyevent
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*/
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CodeCell.prototype.handle_codemirror_keyevent = function (editor, event) {
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var that = this;
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// whatever key is pressed, first, cancel the tooltip request before
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// they are sent, and remove tooltip if any, except for tab again
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var tooltip_closed = null;
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if (event.type === 'keydown' && event.which != keycodes.tab ) {
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tooltip_closed = this.tooltip.remove_and_cancel_tooltip();
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}
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var cur = editor.getCursor();
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if (event.keyCode === keycodes.enter){
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this.auto_highlight();
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}
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if (event.which === keycodes.down && event.type === 'keypress' && this.tooltip.time_before_tooltip >= 0) {
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// triger on keypress (!) otherwise inconsistent event.which depending on plateform
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// browser and keyboard layout !
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// Pressing '(' , request tooltip, don't forget to reappend it
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// The second argument says to hide the tooltip if the docstring
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// is actually empty
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this.tooltip.pending(that, true);
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} else if ( tooltip_closed && event.which === keycodes.esc && event.type === 'keydown') {
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// If tooltip is active, cancel it. The call to
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// remove_and_cancel_tooltip above doesn't pass, force=true.
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// Because of this it won't actually close the tooltip
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// if it is in sticky mode. Thus, we have to check again if it is open
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// and close it with force=true.
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if (!this.tooltip._hidden) {
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this.tooltip.remove_and_cancel_tooltip(true);
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}
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// If we closed the tooltip, don't let CM or the global handlers
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// handle this event.
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event.codemirrorIgnore = true;
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event.preventDefault();
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return true;
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} else if (event.keyCode === keycodes.tab && event.type === 'keydown' && event.shiftKey) {
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if (editor.somethingSelected() || editor.getSelections().length !== 1){
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var anchor = editor.getCursor("anchor");
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var head = editor.getCursor("head");
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if( anchor.line != head.line){
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return false;
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}
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}
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this.tooltip.request(that);
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event.codemirrorIgnore = true;
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event.preventDefault();
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return true;
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} else if (event.keyCode === keycodes.tab && event.type == 'keydown') {
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// Tab completion.
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this.tooltip.remove_and_cancel_tooltip();
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// completion does not work on multicursor, it might be possible though in some cases
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if (editor.somethingSelected() || editor.getSelections().length > 1) {
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return false;
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}
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var pre_cursor = editor.getRange({line:cur.line,ch:0},cur);
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if (pre_cursor.trim() === "") {
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// Don't autocomplete if the part of the line before the cursor
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// is empty. In this case, let CodeMirror handle indentation.
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return false;
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} else {
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event.codemirrorIgnore = true;
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event.preventDefault();
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this.completer.startCompletion();
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return true;
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}
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}
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// keyboard event wasn't one of those unique to code cells, let's see
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// if it's one of the generic ones (i.e. check edit mode shortcuts)
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return Cell.prototype.handle_codemirror_keyevent.apply(this, [editor, event]);
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};
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// Kernel related calls.
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CodeCell.prototype.set_kernel = function (kernel) {
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this.kernel = kernel;
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};
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/**
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* Execute current code cell to the kernel
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* @method execute
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*/
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CodeCell.prototype.execute = function () {
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if (!this.kernel || !this.kernel.is_connected()) {
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console.log("Can't execute, kernel is not connected.");
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return;
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}
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this.active_output_area.clear_output();
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// Clear widget area
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for (var i = 0; i < this.widget_views.length; i++) {
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this.widget_views[i].remove();
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}
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this.widget_views = [];
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this.widget_subarea.html('');
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this.widget_subarea.height('');
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this.widget_area.height('');
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this.widget_area.hide();
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this.set_input_prompt('*');
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this.element.addClass("running");
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if (this.last_msg_id) {
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this.kernel.clear_callbacks_for_msg(this.last_msg_id);
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}
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var callbacks = this.get_callbacks();
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var old_msg_id = this.last_msg_id;
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this.last_msg_id = this.kernel.execute(this.get_text(), callbacks, {silent: false, store_history: true});
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if (old_msg_id) {
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delete CodeCell.msg_cells[old_msg_id];
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}
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CodeCell.msg_cells[this.last_msg_id] = this;
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this.render();
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this.events.trigger('execute.CodeCell', {cell: this});
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};
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/**
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* Construct the default callbacks for
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* @method get_callbacks
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*/
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CodeCell.prototype.get_callbacks = function () {
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var that = this;
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return {
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shell : {
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reply : $.proxy(this._handle_execute_reply, this),
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payload : {
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set_next_input : $.proxy(this._handle_set_next_input, this),
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page : $.proxy(this._open_with_pager, this)
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}
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},
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iopub : {
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output : function() {
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that.active_output_area.handle_output.apply(that.active_output_area, arguments);
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},
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clear_output : function() {
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that.active_output_area.handle_clear_output.apply(that.active_output_area, arguments);
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},
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},
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input : $.proxy(this._handle_input_request, this)
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};
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};
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CodeCell.prototype._open_with_pager = function (payload) {
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this.events.trigger('open_with_text.Pager', payload);
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};
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/**
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* @method _handle_execute_reply
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* @private
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*/
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CodeCell.prototype._handle_execute_reply = function (msg) {
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this.set_input_prompt(msg.content.execution_count);
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this.element.removeClass("running");
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this.events.trigger('set_dirty.Notebook', {value: true});
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};
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/**
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* @method _handle_set_next_input
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* @private
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*/
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CodeCell.prototype._handle_set_next_input = function (payload) {
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var data = {'cell': this, 'text': payload.text, replace: payload.replace};
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this.events.trigger('set_next_input.Notebook', data);
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};
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/**
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* @method _handle_input_request
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* @private
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*/
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CodeCell.prototype._handle_input_request = function (msg) {
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this.active_output_area.append_raw_input(msg);
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};
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// Basic cell manipulation.
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CodeCell.prototype.select = function () {
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var cont = Cell.prototype.select.apply(this);
|
|
|
if (cont) {
|
|
|
this.code_mirror.refresh();
|
|
|
this.auto_highlight();
|
|
|
}
|
|
|
return cont;
|
|
|
};
|
|
|
|
|
|
CodeCell.prototype.render = function () {
|
|
|
var cont = Cell.prototype.render.apply(this);
|
|
|
// Always execute, even if we are already in the rendered state
|
|
|
return cont;
|
|
|
};
|
|
|
|
|
|
CodeCell.prototype.select_all = function () {
|
|
|
var start = {line: 0, ch: 0};
|
|
|
var nlines = this.code_mirror.lineCount();
|
|
|
var last_line = this.code_mirror.getLine(nlines-1);
|
|
|
var end = {line: nlines-1, ch: last_line.length};
|
|
|
this.code_mirror.setSelection(start, end);
|
|
|
};
|
|
|
|
|
|
|
|
|
CodeCell.prototype.collapse_output = function () {
|
|
|
this.output_area.collapse();
|
|
|
};
|
|
|
|
|
|
|
|
|
CodeCell.prototype.expand_output = function () {
|
|
|
this.output_area.expand();
|
|
|
this.output_area.unscroll_area();
|
|
|
};
|
|
|
|
|
|
CodeCell.prototype.scroll_output = function () {
|
|
|
this.output_area.expand();
|
|
|
this.output_area.scroll_if_long();
|
|
|
};
|
|
|
|
|
|
CodeCell.prototype.toggle_output = function () {
|
|
|
this.output_area.toggle_output();
|
|
|
};
|
|
|
|
|
|
CodeCell.prototype.toggle_output_scroll = function () {
|
|
|
this.output_area.toggle_scroll();
|
|
|
};
|
|
|
|
|
|
|
|
|
CodeCell.input_prompt_classical = function (prompt_value, lines_number) {
|
|
|
var ns;
|
|
|
if (prompt_value === undefined || prompt_value === null) {
|
|
|
ns = " ";
|
|
|
} else {
|
|
|
ns = encodeURIComponent(prompt_value);
|
|
|
}
|
|
|
return 'In [' + ns + ']:';
|
|
|
};
|
|
|
|
|
|
CodeCell.input_prompt_continuation = function (prompt_value, lines_number) {
|
|
|
var html = [CodeCell.input_prompt_classical(prompt_value, lines_number)];
|
|
|
for(var i=1; i < lines_number; i++) {
|
|
|
html.push(['...:']);
|
|
|
}
|
|
|
return html.join('<br/>');
|
|
|
};
|
|
|
|
|
|
CodeCell.input_prompt_function = CodeCell.input_prompt_classical;
|
|
|
|
|
|
|
|
|
CodeCell.prototype.set_input_prompt = function (number) {
|
|
|
var nline = 1;
|
|
|
if (this.code_mirror !== undefined) {
|
|
|
nline = this.code_mirror.lineCount();
|
|
|
}
|
|
|
this.input_prompt_number = number;
|
|
|
var prompt_html = CodeCell.input_prompt_function(this.input_prompt_number, nline);
|
|
|
// This HTML call is okay because the user contents are escaped.
|
|
|
this.element.find('div.input_prompt').html(prompt_html);
|
|
|
};
|
|
|
|
|
|
|
|
|
CodeCell.prototype.clear_input = function () {
|
|
|
this.code_mirror.setValue('');
|
|
|
};
|
|
|
|
|
|
|
|
|
CodeCell.prototype.get_text = function () {
|
|
|
return this.code_mirror.getValue();
|
|
|
};
|
|
|
|
|
|
|
|
|
CodeCell.prototype.set_text = function (code) {
|
|
|
return this.code_mirror.setValue(code);
|
|
|
};
|
|
|
|
|
|
|
|
|
CodeCell.prototype.clear_output = function (wait) {
|
|
|
this.active_output_area.clear_output(wait);
|
|
|
this.set_input_prompt();
|
|
|
};
|
|
|
|
|
|
|
|
|
// JSON serialization
|
|
|
|
|
|
CodeCell.prototype.fromJSON = function (data) {
|
|
|
Cell.prototype.fromJSON.apply(this, arguments);
|
|
|
if (data.cell_type === 'code') {
|
|
|
if (data.source !== undefined) {
|
|
|
this.set_text(data.source);
|
|
|
// make this value the starting point, so that we can only undo
|
|
|
// to this state, instead of a blank cell
|
|
|
this.code_mirror.clearHistory();
|
|
|
this.auto_highlight();
|
|
|
}
|
|
|
this.set_input_prompt(data.execution_count);
|
|
|
this.output_area.trusted = data.metadata.trusted || false;
|
|
|
this.output_area.fromJSON(data.outputs);
|
|
|
if (data.metadata.collapsed !== undefined) {
|
|
|
if (data.metadata.collapsed) {
|
|
|
this.collapse_output();
|
|
|
} else {
|
|
|
this.expand_output();
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
};
|
|
|
|
|
|
|
|
|
CodeCell.prototype.toJSON = function () {
|
|
|
var data = Cell.prototype.toJSON.apply(this);
|
|
|
data.source = this.get_text();
|
|
|
// is finite protect against undefined and '*' value
|
|
|
if (isFinite(this.input_prompt_number)) {
|
|
|
data.execution_count = this.input_prompt_number;
|
|
|
} else {
|
|
|
data.execution_count = null;
|
|
|
}
|
|
|
var outputs = this.output_area.toJSON();
|
|
|
data.outputs = outputs;
|
|
|
data.metadata.trusted = this.output_area.trusted;
|
|
|
data.metadata.collapsed = this.output_area.collapsed;
|
|
|
return data;
|
|
|
};
|
|
|
|
|
|
/**
|
|
|
* handle cell level logic when a cell is unselected
|
|
|
* @method unselect
|
|
|
* @return is the action being taken
|
|
|
*/
|
|
|
CodeCell.prototype.unselect = function () {
|
|
|
var cont = Cell.prototype.unselect.apply(this);
|
|
|
if (cont) {
|
|
|
// When a code cell is usnelected, make sure that the corresponding
|
|
|
// tooltip and completer to that cell is closed.
|
|
|
this.tooltip.remove_and_cancel_tooltip(true);
|
|
|
if (this.completer !== null) {
|
|
|
this.completer.close();
|
|
|
}
|
|
|
}
|
|
|
return cont;
|
|
|
};
|
|
|
|
|
|
// Backwards compatability.
|
|
|
IPython.CodeCell = CodeCell;
|
|
|
|
|
|
return {'CodeCell': CodeCell};
|
|
|
});
|
|
|
|
